Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
nhanh mang » nhanh lang, hanh mang, nhanh quang
chong van » thong van, hong van, phong van
mang va » mang vua, hang va, bang va
van van » tan van, san van, van vat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (chieu sang)) - nhanh mang va nhung chong van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu sang)) - nhanh mang va nhung chong van van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu sang)) - nhanh mang va nhung chong van van ban*.